Brits love Claymation, evident by a slew of stop-motion Plasticine shorts and feature films including Wallace and Gromit, Chicken Run and The Pirates! Band of Misfits.

Now, a Brighton, UK-based development studio called Fat Pebble has rolled out Clay Jam for iOS and Android devices.

Made entirely out of clay, this mobile action game is fun, free and visually striking – especially on iPad with Retina display.

You play as a pebble that must roll down hills to save the land from the fearsome Bully Beasts. By tilting the phone or tablet, you'll guide the pebble around obstacles and roll over monsters. As you'd expect, squashing these colorful creatures adds clay to your ball so you'll grow larger while descending. The bigger you get, the more you can roll over and the faster you can roll towards the giant Bully Beasts at the bottom of the hill. This game mechanic might remind players of the once-trendy Katamari game series from Namco.

Depending on the hill you're on, you'll be asked to complete missions for extra points, such as rolling over 10 blue monsters in a row or knocking the Bully Beasts at least 300 meters. The first hill you're on has 20 such challenges. Another mode tests your ability to outrun an avalanche as far as you can. A recent Valentine's Day update for iOS adds an additional game mode, a new monster, and other goodies.

The more you play, the more power-ups you can acquire that give you an edge when you need it, such as a flaming pebble, one that makes you larger and a third that zaps monsters around you. The 20-odd monsters in the game are ingenious, such as the cute "hugging" creatures or polka-dotted slender ones that sound like gobbling turkeys or an evil hamburger face. And yes, everything – the monsters, worlds and special effects – are all made of clay.

The game is completely free to play but you can buy extra clay from an in-app store. These optional purchases range from $0.99 cents for a small pack of clay to $49.99 for the "Ultimate Clay Pack" that houses a bunch of clay, power-ups and more.

Clay Jam is a blast to play for kids and kids at heart, so be sure to roll over to the App Store or Google Play to download the game.